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Merged nuttx/arch into master

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ziggurat29 2016-03-29 16:41:31 -05:00
commit 998dc0b474
2 changed files with 25 additions and 5 deletions
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15
arch/arm/src/armv7-a/sctlr.h
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@ -143,14 +143,25 @@
#define SCTLR_HA (1 << 17) /* Bit 17: Hardware management access disabled (2) */
/* Bits 18-24: Reserved */
#define SCTLR_EE (1 << 25) /* Bit 25: Determines the value the CPSR.E */
/* Bits 26-27: Reserved */
/* Bit 26: Reserved */
#define SCTLR_NMFI (1 << 27) /* Bit 27: Non-maskable FIQ support (Cortex-A9) */
#define SCTLR_TRE (1 << 28) /* Bit 28: TEX remap */
#define SCTLR_AFE (1 << 29) /* Bit 29: Access Flag Enable bit */
#define SCTLR_TE (1 << 30) /* Bit 30: Thumb exception enable */
/* Bit 31: Reserved */
/* Auxiliary Control Register (ACTLR) */
/* TODO: To be provided */
#define ACTLR_FW (1 << 0) /* Bit 0: Enable Cache/TLB maintenance broadcase */
#define ACTLR_L2_PREFECTH (1 << 1) /* Bit 1: L2 pre-fetch hint enable */
#define ACTLR_L1_PREFETCH (1 << 2) /* Bit 2: L1 Dside pre-fetch enable */
#define ACTLR_LINE_ZERO (1 << 3) /* Bit 3: Enable write full line zero mode */
/* Bits 4-5: Reserved */
#define ACTLR_SMP (1 << 6) /* Bit 6: Cortex-A9 taking part in coherency */
#define ACTLR_EXCL (1 << 7) /* Bit 7: Exclusive cache bit */
#define ACTLR_ALLOC_1WAY (1 << 8) /* Bit 8: Allocation in 1-way cache only */
#define ACTLR_PARITY (1 << 9) /* Bit 9: Parity ON */
/* Bits 10-31: Reserved */
/* Coprocessor Access Control Register (CPACR) */
/* TODO: To be provided */

15
arch/arm/src/imx6/chip/imx_memorymap.h
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@ -854,10 +854,19 @@
/* Level 2 Page table start addresses.
*
* 16Kb of memory is reserved hold the page table for the virtual mappings. A
* The maximum size of the L1 page table is:
*
* (4GB address range / 1 MB per section ) * 4 bytes per entry = 16KB
*
* The maximum size of the L2 page table is:
*
* (4GB address range / 4 KB per page ) * 4 bytes per entry = 4MB
*
* 16KB of memory is reserved hold the page table for the virtual mappings. A
* portion of this table is not accessible in the virtual address space (for
* normal operation). There is this large whole in the physcal address space
* for which there will never be level 1 mappings:
* normal operation with a one-to-one address mapping). There is this large
* hole in the physcal address space for which there will never be level 1
* mappings:
*
* 0x80000000-0xefffffff: Undefined (1.75 GB)
*